Anti-theft cover and tank

The anti-theft cover comprises a first cover body and is provided with an inserting piece, one end of the inserting piece is connected with the first cover body, the other end of the inserting piece is provided with a first clamping hook, and the inserting piece extends in the vertical direction; the second cover body is hinged to the first cover body, the second cover body is used for buckling the first cover body, the second cover body is fixedly connected with a blocking piece, a containing space is defined by the inner wall of the blocking piece and the outer wall of the second cover body, a gap is formed between the lower end of the blocking piece and the second cover body, the containing space is used for containing an inserting piece, and the first clamping hook is used for hooking the lower end of the blocking piece. The blocking piece is fixedly connected to the second cover body, due to the fact that the inserting piece and the first clamping hook are limited by the blocking piece, when the first co